Boat lift and dock wiring
#1
10-16-22, 07:52 AM
Boat lift and dock wiring
- I have a boat dock with a boat lift wired for 110 v with a ACII CONTROLLER. 2 motors total amp draw 25 amp. I don’t want to change wiring to 220 because I would think 120 would be a little safer out there if a problem . I know it could still get you. I m also wanting a 120 volt receptacle out there . from house to end dock is 140 ‘ I have run #8 thwn 4 wires. I will need a 30 amp breaker for boat lift as I don’t see a 30 amp gfic receptable. Wiring is pulled in Sch 40 pvc and no where does it touch any metal.my question is should I put gfic breaker at house . If I do this how can I protect the 20 amp receptacle other putting a sub panel out at end of dock and putting my gfic out there? Thanks
#2
10-16-22, 08:04 AM
You must use a sub panel or run separate circuit for 120V receptacles because maximum breaker or fuse size you can use for 120V 15A or 20A receptacle circuit is 20A.
Since you have 4 wires, you can install 120V/240V outdoor sub-panel and install 2 30A GFCI breakers and 1 20A (or 15A if you choose to) GFCI breaker.
Since you have 4 wires, you can install 120V/240V outdoor sub-panel and install 2 30A GFCI breakers and 1 20A (or 15A if you choose to) GFCI breaker.
#3
10-16-22, 09:02 AM
Gfic at boat lift
Ok, thanks, so I put in a 30 amp gfic sp for boat lift and 20 amp sp for receptable.at my sub panel which is at back of house. . Didn’t think I could use same netural and ground for both . So from my main panel to sub panel at house also needs to be a 50 amp dp
Last edited by dkimbro; 10-16-22 at 11:18 AM.
#5
10-16-22, 11:26 AM
Looks like best and cheapest is for me to put my sub at house on a regular breaker ,, 30 or 50 Amp ? I have # 8 thwn going out to dock . Then put a sub out at boat lift for gfic to run 30 to boat lift and 20 for receptable. Can you feed another sub from a sub panel or should I get rid of disconnect at house and run off main panel at house?
thanks
thanks
#6
10-16-22, 06:25 PM
ThisOldMan
voted this post useful.
#7
10-17-22, 03:32 PM
Didn’t think I could use same netural and ground for both
I can use existing ground and neutral if sub-panel is installed. It will be basically 30A feed to sub panel. If running separate 20A circuit, then you will need to run 12AWG hot and neutral wires and use existing ground.
So from my main panel to sub panel at house also needs to be a 50 amp dp
